module Cardflex
  class ThreeStepGateway
    attr_reader :config

    def initialize(gateway)
      @gateway = gateway
      @config = gateway.config
    end

    # Three Step API
    def get_form_url(attributes)
      root = attributes.keys[0]
      raise ArgumentError, 'missing :redirect_url' unless attributes[root][:redirect_url]

      res = @config.http.post(attributes)
      _handle_intermediate_response(res)
    end

    def complete(token_id)
      raise ArgumentError, 'you must provide a token_id' unless token_id

      res = @config.http.post(:complete_action => { :token_id => token_id })
      _handle_response(res)
    end

    def _handle_response(res)
      if res[:response][:result] == '1'
        SuccessResponse.new(:transaction => Transaction.new(@gateway, res[:response]))
      else
        ErrorResponse.new(@gateway, res[:response])
      end
    end

    def _handle_intermediate_response(res)
      if res[:response][:result] == '1'
        SuccessResponse.new(:three_step => ThreeStep.new(@gateway, res[:response]))
      else
        ErrorResponse.new(@gateway, res[:response])
      end
    end
  end
end